College professors could DENY someone the right to audio and/or video record their lectures. Your "freedom" sort of ends once you step on a college campus and have to abide by their regulations and guidelines. If the college and/or professor had strict guidelines against recording, then, yes, this student should get expelled. If the student didn't like the the guidelines, then go to a different school. MANY professors and universities do not allow recordings of lectures. This is nothing new. However, if these guidelines were never made explicit, then the student should not be expelled.